How to check blank PATS key
Posted: Sat Jul 18, 2015 2:43 am
This is a complementory article, so please read the base one first:
http://forscan.org/forum/viewtopic.php?f=6&t=83
A lot of complaints to PATS programming function are related to incorrect blank keys used (not working or not compatible transponder). This article describes how to check a blank key using FORScan.
0. Insert the blank key in the ignition lock.
1. Detect the module that contains PATS. It is easy: go to Service tab and look what module contains PATS programming function. Depending on the vehicle, it may be PCM, PATS, IC, HEC etc.
2. Read DTC. For newer vehicles with CAN bus ((Focus Mk2...) it is OK to just read DTC for PATS module in Errors section. For older vehicles (Focus Mk1, Mondeo Mk3...) running the PATS module self-test in Tests section may be necessary
3. Analyze returned DTC codes:
3.1. If the test returns B1601 code (B10D7:51 for new PATS), it means the blank key is OK and can be programmed for this vehicle.
3.2. If the test returns B1600 code(B10D7:87 for new PATS), it means the blank key is not recognized by PATS and can NOT be programmed for this vehicle.
3.3. If the test returns B1602 code (sometimes simulatenously with B1600, B1601) (B10D7:8F for new PATS), it means PATS is unable to stably read the key transponder. That's possible with clones. You may try to shift the transponder to another place of the key fob. If it doesn't help, it may be good idea to replace the transponder. Programming such keys in FORScan v2.2.8 and older may look successful (FORScan says key programmed successfully), but in fact the key is not added to the PATS memory (key counter is not increased) and Errors section may display code like B2431 - Transponder Programming Failed.
3.4. If the test returns another code (non of B1601...B1602, but related to PATS), it is recommended to contact support.
3.5. If test executed successfully, but no any of B1600, B1601 codes are returned, it means the key is programmed for this PCM already.
Note 2017-01-03: users' experience says that B1601 code is not a guarantee of a flawless work. We already have several complaints (all for domestic market cars) when high quality but non-OEM keys produced B1601 code but cannot be programmed. In all cases replacing non-OEM key with OEM one fixed the issue. So please: (i) ask seller for money back warranty in case of non-working key and (II) do not use Erase Keys function until you are sure the new key can be successfully programmed (remember, engine will not start in case of PATS memory has less than 2 learned keys).
Note 2017-10-31: New PATS have other codes:
B10D7:51 instead of B1601 (PATS key is read OK but not added to the PATS memory yet)
B10D7:87 instead of B1600 (blank key is not recognized by PATS)
B10D7:8F instead of B1602 ( PATS is unable to stably read the key transponder)
http://forscan.org/forum/viewtopic.php?f=6&t=83
A lot of complaints to PATS programming function are related to incorrect blank keys used (not working or not compatible transponder). This article describes how to check a blank key using FORScan.
0. Insert the blank key in the ignition lock.
1. Detect the module that contains PATS. It is easy: go to Service tab and look what module contains PATS programming function. Depending on the vehicle, it may be PCM, PATS, IC, HEC etc.
2. Read DTC. For newer vehicles with CAN bus ((Focus Mk2...) it is OK to just read DTC for PATS module in Errors section. For older vehicles (Focus Mk1, Mondeo Mk3...) running the PATS module self-test in Tests section may be necessary
3. Analyze returned DTC codes:
3.1. If the test returns B1601 code (B10D7:51 for new PATS), it means the blank key is OK and can be programmed for this vehicle.
3.2. If the test returns B1600 code(B10D7:87 for new PATS), it means the blank key is not recognized by PATS and can NOT be programmed for this vehicle.
3.3. If the test returns B1602 code (sometimes simulatenously with B1600, B1601) (B10D7:8F for new PATS), it means PATS is unable to stably read the key transponder. That's possible with clones. You may try to shift the transponder to another place of the key fob. If it doesn't help, it may be good idea to replace the transponder. Programming such keys in FORScan v2.2.8 and older may look successful (FORScan says key programmed successfully), but in fact the key is not added to the PATS memory (key counter is not increased) and Errors section may display code like B2431 - Transponder Programming Failed.
3.4. If the test returns another code (non of B1601...B1602, but related to PATS), it is recommended to contact support.
3.5. If test executed successfully, but no any of B1600, B1601 codes are returned, it means the key is programmed for this PCM already.
Note 2017-01-03: users' experience says that B1601 code is not a guarantee of a flawless work. We already have several complaints (all for domestic market cars) when high quality but non-OEM keys produced B1601 code but cannot be programmed. In all cases replacing non-OEM key with OEM one fixed the issue. So please: (i) ask seller for money back warranty in case of non-working key and (II) do not use Erase Keys function until you are sure the new key can be successfully programmed (remember, engine will not start in case of PATS memory has less than 2 learned keys).
Note 2017-10-31: New PATS have other codes:
B10D7:51 instead of B1601 (PATS key is read OK but not added to the PATS memory yet)
B10D7:87 instead of B1600 (blank key is not recognized by PATS)
B10D7:8F instead of B1602 ( PATS is unable to stably read the key transponder)